once upon a time affluent suburbs were solid republican territory, george h.w. bush in 1988 got big margins and carried states like michigan, ohio, california, in the four suburban counties outside philadelphia, he got 61% of the vote. zeroed out the democratic margin in the city of philadelphia. if you look at over the last 20 years, there's been a democratic trend in the affluent suburbs, and so president barack obama carried those four counties in pennsylvania with 57% of the vote if he carried the state. mitt romney grew up in bloomfield hills. >> a suburb of detroit. >> well, i grew up in the same area, went to the same high school so i'm quite familiar with it. he seems to be doing better. i if you look at the battleground poll -- the pew research poll where you have a big sample. so if you have a subsample you have some confidence the numbers are good. you see that romney, post-october 3rd debate, is carrying apparently statistically significant margins. people with incomes over over $75,000. barack obama carried them 15-49 in 2008. romney made bigger gai